780015

素因数分解:

$3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:506

約数の個数: 16

約数和(自身を含む): 1260000

約数和(自身を除く): 479985

約数列:

[1, 3, 5, 15, 149, 349, 447, 745, 1047, 1745, 2235, 5235, 52001, 156003, 260005, 780015]

約数ペア:

[(1, 780015), (3, 260005), (5, 156003), (15, 52001), (149, 5235), (349, 2235), (447, 1745), (745, 1047)]